Seiko Cal. 6131 - 544

Released in 1978, the Cal. 6131 with design code 544 was part of Seiko's domestic market collection. It features a Navy dial protected by a Mineral crystal and offers 60m of water resistance. [seikata-wm-a48f733d630f]

Also known as: Bullhead

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

46mm

Case Thickness

10.1mm

Lug Width

18mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

60m

Dial Color

Navy

Jewels

22j

Frequency

36,000 bph

Power Reserve

40 hours

Year

1978

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